Lawn mower



C. H. PEEL LAWN MOWER March 1s, 1930. v

Filed Oct. 25, 1928 L l l 6, l 2 l A 17u/enter mw Wm# M M Z My ruey.

Patented Mar. 18, 1930 UNiTsn stares CLARENCE Howaarn PEEL, or DUNDAs, ONTARIO, CANADA LAWN MOWER Application led October 25, 1928. Serial 310.3143971.

The invention relates to improvements in lawn mowers as described in the present specification and shown in the accompanying drawings which form part of the same.

lThe invention has for its general object to provide an eflicient and serviceable lawn mower that requires but little power to operate. More specifically the invention takes the form of a lawnmower in which the cutting mechanism has a scissorlike action in contradistinction to the rotary spiral blades of the ordinary lawn mower. This mower presents many salient advantages in that with it a lawn may be cut right up to the edge of an obstruction thus obviating a great deal Vof work hand trimming: moreover the cutting mechanism is adjustable for shearing the grass over a large range of heights and is particularly suitable for cutting close to the ground. l/Vith this and other objects in View the invention consists of the novel construction and arrangement of parts as described in detail in the specication and claimed in the claim thereafter following.

Referring to the drawings: Figure 1 is a perspective view of the lawn mower embodying the present invention.

Figure 2 is a vertical section through the cutting blades and mechanism therefor.

Figure 3 is a perspective view of the knife or oscillating blade.

Figure l is a cross section through one of the supporting brackets for the cutters. |This section is taken on the line 4 4 of Figure 2.

Figure 5 is a transverse section taken on` frame which comprises the dead axle 10 to which is rigidly affixed the end plates 11 and s 12 on which the various operating mechanism is mounted. The wheels 13 are mounted'upon the axle 10 on the outside of the respective end plates 11 and 12 as customary. The power is taken 0H these wheels in the form of the usual traction driveconsisting of the shaft 111 that extends from one to the other of the 515 plates 11 and 12 and carries pinions that mesh with teeth provided on the internal surfaces of the wheels 13. These pinions are preferably of the ratchet type design in order to y transmit power to the shaft 14 as the lawn '60 mower is being forwardly vpropelled only. This is of conventional construction and the pinionsl together with the internal teeth of the wheels are not illustrated since they do not form a part of the present invention.

15 is the customary handle which extends rearwardly of the end plates 11 and 12 and is connected thereto as usual.

16 is a shaft extendingtransversely and is 4 positioned in advance ofthe axle 10.1 'The '70 ends of this shaft are journalled in bearings as at 17 integral with or secured to the end plates 11 and 12. This shaft is geared to the shaft 14 by a pair of sprockets 18 over which a chain 19 is mounted. rIhe driving sprocket 75 of the pair is preferably made much larger. in order to transmitpower to the driving Y shaft 16 at a much greater speed. It is to be understood that gearing other than 4the i sprockets and chain may; be employed in this 80 capacityif so desired and the invention is not to be limited in this respect.

2O is the cutting mechanism which comprises a stationaryblade'21 positioned below the shaft 16 and forwardly of the wheels13. S5 VThis cutter is adjustablyv supported from the end plates 11 and 12 in order that'it may be raised or lowered Vwithrespect to the ground. rllhe preferable mode of connecting the blade takes they form of brackets 22 depending 90 l from the respective end'l plates;` 11 and 12, such brackets being formedmtegral therewith or secured thereto in any. desirable manner.

21 are lugs 23 preferably integral therewith, which lugsoverlap' the respective termini of the brackets 22 and arepprovided with flanges 2 3 best discernible in Figure-'4 inxorder -to A act as guides and to take the cuttingthru'st. 100

Rising from the .opposing ends ofthefblade A91H5 i Y spective lug 23 and has a nut aixed on its shank in order that upon tightening it may bind the Vbracket and lug together." "Bythis construction it will be'readily seen that ythe stationary plate 21 may be adjusted vertically by merely slackeningthe nuts on the Y bolts 25 and resetting the cutter in any desired position and thereupon retigntening the nuts.

26 is a knife or movable blade which sur-f lnolints the fixed blade 21 and is provided with teeth 27 for crossing the teeth thereof dnring'oscilljation. Thisknife is retained iny place byV screws 28 which loosely` pass through slots 29 and Vthreadedly engage the lined blade 2l. In Q rder to guide the knife in its' longitudinal reciprocation it is preferable'to provide npstandingkey 30 upon the fined blade 2l vso as t venter a keyway in the lmife; see lFigure 5 This key may extend continuously between the blades, or in place thereof a number of Short keys may be usefl.-Y

Power is taken off the shaft 16 in order to operate the knife and so asv to convert the rotary movement of the shaft into a reciprocation of the blade. Mechanism is provided comprising a pair of meshing bevel gears 31,V

32, the latter of which is keyed to the shaft A1 G-while the former is journalled in a bearing that is born@v by bracket 34. Y Y Y.

. The hub, of the gear 31 extends vertically and is bored as. atB to slidably receive a shaft 36 providing a telescopic action, indelendent rotation of the parts being precluded a key 3,7 that slides in a keyway 38.

The lower end of the shaft is rigidly afthe end plate by a V fixed, or integral with, an eccentric 39 that Y QSS lliti mee eperates, in a well f4.0, of a boss 4 1. which is Yprotzided on the top face of the knife 26. The

eccentric engagesnpposng feces of the well order to.V reciprocate the knife, a cover l2 lins prevdedtc protect the eccentric from @lust and. foreign elellents. y .Y Y

1t 'ill' be readily- 1.1 11.dersteod by these skilled in the art-that th @over will; .neces Sailly have te have a Certain arnouetof; playY with,v respect,tol the boss' 41 in order tol take @are e'themovement of the knife and toths 1* en@ w sehuecove i@ n@ f-f'srcws 432th@ ,fitted il;

z aleta prevea@ lfthe crever; thisyhewever, can be accomplished'in any other convenient lisette n. e" m red4 l n et; the invention when the .t @reed ever the'greuiis by means ofthe h iid f. l5. priver is delivered by l, c p-ccketendcherl Conf to those skilled in the art that it is equally applicable to a power driven lawn mower. v

teeth projecting from its forward edge, ai

knife mounted thereon for reciprocal movement, means for adjustably securing theV fixed blade( in the fra1ne,a bossborne by the knife providing a well, an eccentric operably retained therein7 ashaft rigidly rising'from saldeccentric, a bearing projecting from the frame, a gear journalled' therein,"'said gear having anelongated bore telescopicallyreceiving said shaft,-a key precliiding independent rotation therebetween, anda driven gear meshing with said gear.

' Signed at Hamilton, Canada, this 18th day of October, 1928. f HQWAR'IH PEEL. 

